Improvement in underground-drain plows



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Patented Fgb. 8,1859.

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i UNITED STATES PATENT Ormea.I

AUGUSTUS WATSON, OF WALNUT RUN, OHIO.

IMPROVEMENT IN unulaueRoutin-ibi-'uitritv PLows.

' Specification' forming part-of Letters' Patent No. 22,906, dated February 8,1859.

` to be a full, clear, and exact description ot' the construction and operation of the salue, reference being had to the accompanyingdrawings,

making a part of this specification, in which- Figure 1 represents a side view of the plow as it-appears when forming the ditch. Fig. 2`

represents the plow as it'appears when the molejs withdrawn from the ground. Fig repf resents a longitudinal vertical section through" the mole; and Fig. 4 represents a vertical crosslsection through themole, taken at the red'line wa: ofFig. 3.

Similar letters of reference, where they oeeur in the several figures, denote like parts of the apparatus iu all the figures.

To enable others skilled in the art to make 'and use my invention, I will proceed to describe the same with refereneetothe drawings.

, A represents a beam, to the front end of which the .force or power that isto draw the plow is applied. This beam may be supported on pairs or sets of runners B B; or it may be mounted ou or supported by wheels or trucks,

if so preferred. The rear end of the beam is slotted or mortised, so as to receive in said slot or mortise a colter, C, `whiclris secured to the beam by a bolt or pin, a, on which it may hinge or swing, and behind the'colter, as seeu'in Fig.-

2, there isa horizontal mortise, b, through the beam to receive a key or wedge, c, to holdthe colter in the position shown in said Fig. 1. A- difculty Iwithuthese underground plows, and` a serious one, consists in the trouble ot' getting the mole up out ofthe ground, as`- it can-` not be drawn u vertically without greatpowcr and` danger of reaking it. I obviatethis difiiculty by the' means I employ 'in securing the colter, and-when vI'desire the mole to be raised ont of the ground -I- simply knock out the key c, and the colter will fall back until it assumes the position shown in Fig. 2, andthe mole runs ont to. thefsmj'ace, and in this position the plow can b e run along from place to place ou its runners B B.

The mole or ditch-former D, as showuiu Figs. 1 and 2, is united to the colter by a link, d, which will allow itl some play independent of the colter; but I prefer to make andV connect the mole as shown in Figs. 3 Aand 4,' where a tongue or nose, E, is let into a vertical slot in the point of the mole, and pivoted in said slot by a pivot-pin at e, and the link d is fastened to this nose, which may have two or more holes in 'it for that purposeand for adjustment. By

this means of eonneetingthemole tt does not .rise andfall as the beam-supports vrise and drop in goingover the ground, and as a cousequence the bottom 'of the ditch 4preserves a better level line or plane, as the nose E -will yield to the rising or falling of the beam without affecting the mole itself. Y,

In Fig. 4 I have shown -a cross-section of the mole D.V I find this form of mole passes through the ground with less resistance than any others of which I have knowledge, there being less surface friction on the under side or sole,f, the

inclined sides t' -i relieving'the bottom friction.

This makes a good shaped ditch, too, having the regular ditch form below, which is arched over 'at top. la is a guiding piece at therrear under side of the mole, acting like arudder to cause the point or foremost end of the mole to follow the colter. v

Havingthus fully described the nature and object of my invention, what I claim therein as new s-` "So hanging a colter to which a mole is attached as that'by removing a key or its equivaient that restrains said colter and by advancing the plow said eolteraud mole will run out of the ground, substautiallyas herein described and represented.

t AUGUSTUS WATSON. j 'Witnesses-z TaoMAs HEARD, J oHN- J omis. 

